Orchard heater



H. GRAF ORCHARD REATER Fiid oct. 2, 1931 June l, 1937.

ATT

ii in /f /z lvll I ff /4 i] /4 x j INVENTOR Y Patented June 1, 1937 ,cams

Par cerros ottoman HEATER nem Graf, Toledo, ohio, assigner to American Can Company, New York, N. 1,3 corporation or New Jersey application october 2, ical, serial No. scares 4 Claims.

heater, these elements removably locking and lli holding a rectangular cover in container closing position. l y

Numerous other objects of the invention will he apparent as it is better understood from the iollowing description, which, taken in connection 2i? with the accompanying drawing, discloses a preierrcd embodiment thereof. 1

Referring to the drawing:

Figure l is a perspective view of an orchard heater embodying the present invention;

Fig. 2 is an enlarged sectional view taken substantially in the vertical plane, indicated bythe broken lines in Fig. l, parts oi the section being broken away; and

Fig. 3 is a reduced plan sectional view of the 39 heater bowl as viewed substantially along the line 3-3 in Fig. 2.

In orchard heaters burning fuel oil lt is highly desirable that the several parts of the heater be constructed oi' the lightest material that can be wearing qualities so that the heaters can be easilyhandled when lled with oil and also to minimize shipping costs to the orchards where they are to 40 be used. ltelatively thin sheet metal has been universally used in their fabrication, such material combining cheapness and ease oi' manufacture. A favorite form in the less expensive heaters is the folded square or rectangular shape but 5 in this shape there are relatively largeat side walls which are inherently more or less flexible. The present invention,`overcomes weakness in .the side walls by providing improved reinforcing members properly located for their reinforcing 50 functions and providing additional features such as handles for carrying purposes and yielding snap or clamping elements for holding the cover in closing position.

In the drawing, the numeral H designates a '55 bowl `or body having bottom lz which is adapted (Cl. 22u-55) to be formed from a blank by folding of corner flaps I3 baci: against ilat tapered end walls Iii,v this leaving dat tapered side walls i5. The wall sections i3, it, i5 are slightly bent near the top of the bowl into vertical planes. The upper edges of these walls are preferably bent inwardly, downwardly and outwardlyarouncl a wire it (Fig. 2) this construction producing a curled, smooth, rounded edge il for the mouth or open end of the bowl.

The folded construction of the end parts I3, it with the three thicknesses of metal provides strength and Arigidity ior the end walls and the relatively weaker side walls i5 are strengthened by reinforcing members 2l formed as sheet metal bars which are secured in horizontal positions against the side walls. These bars are secured in any suitable manner, as by spot welded connections 22. Each reinforcing bar 2l, is preferably bent outwardly, along its lower edgeinto a horizontally projecting iiange 23 which is folded back on itself at 2t. Tir.; double flange thickness ci each reinforcing member provides rigidity and converts it into a suitable carrying handle by which the bowl may be easily lifted.

The bar 2 l, above its engagement with the wall it, projects outwardly and upwardly in a semicircular bead section 2t which terminates in a halt-rounded lip il which normally extends close to the wall l5, that is, when the heater howl is open. There is sumcient resiliency in the metal of the bar to permit yielding outwardly oi lthis lip and the bead 'part 25, this yielding feature being utilized `l'or clamping engagement with a coverv member Si. y

The cover 3l is of a size and shape to frictionally nt the open end of the bowl body ii, and is preferably formed with sloping top walls Si and vertically depending skirt walls 33 which frictionally engage the exterior straight or vertical surfaces of the walls of the bowl. The cover walls 33 preferably terminate at their lower rims in curled edges 35. This cover is. when the in; vention is in use, usually provided in a known manner with a damper for the admission of air, which is not illustrated because it is not necessary to the understanding of the invention claimed herein.

When the cover 3i is applied to the bowl body ll adjacent parts of the curled edges 3i are pressed between the vertical walls of the bowl and the lips 2l of the bars 2i and force the lips and their connecting beads 2@ outwardly or away from the bowl until the cover is fully seated on the body. In :dnally closedposition (Fig. 2) the curled edges 3l on the two sides of the cover are fully seated in the interior walls of the beads 2l and the cover is ilrmly, although removably, held in closing position. The cover is easily removed being merely pulled'o of the body, the beads 26 springing outwardly to let the edges Il pass by the lips 21.

It is thought that the invention and many of its attendant advantages will be understood from the foregoing description, and it will be apparent that various changes may be made in the 20 open end, a. plurality of reinforcing bars secured to said side walls, a cover member for closing the open end of said body, said reinforcing bars having means for engaging outside of and above said cover and clamping it in closing position on 25 said body.

2. An orchard heater for fuel oil, comprising body having ilat side walls terminating in an open end, a plurality of reinforcing bars secured' 3. An orchard heater for fuel oil, comprising a Y body having ilat side walls terminating in an open end, oppositely disposed reinforcing bars secured to opposite side walls of said body, each 'of said bars having an upwardly extending yielding edge and an outwardly extending handle part. and a cover member for closing the open end of said body and having depending walls engaging and overhanging #81d body walls and terminating in curled edges adapted to snap into the yielding edges of said reinforcing bars whereby the said cover is retained in closing position.

4. An orchard heater for fuel oil, having a body and superposed cover, the body having attached thereto at opposite .sides strengthening bars having outstanding handle portions, and also having yielding lips engageable over portions of the cover.

HENRY GRAF. 

